Puppet-valve



(Model.)

H. F. FRISBIE.

PUPPBT VALVE.

No. 248,729. n, 1288811888 008. 2 5, 1881.

f2 @ww/W88 Ilrvrrn STATES Arana* erica.

HAMLIN F. FRISBIE, OF CINCINNATI, OHIO.`

PU PPET-VALVE.

SPECIFICATION forming part of Letters Patent No. 248,729, dated October 25, 1881. Application filed April 9, 1581. (Model.)

To all whom it may concern Be it known that l, HAMLIN F. FRisBIE, of

Gincinnati,inthecount vot'Hamilton andinthe Stateot'Ohio,haveinventedcertainnewanduseful Im provements in Puppet-Valves; and I do het eby declare that the tbllowingis afull, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, making a. part of this specification.

This invention relates to celtain improvements in puppet-valves for steam and other engines; and it has for its objects to provide a means whereby thc valve may be cushioned as it is dropped to its seat, in order to prevent the battering and wear of the valve and seat bearings or surfaces, to provide a means ot applying the valve and adjusting the respective parts to regulate the cushion, and to provide for the escape otl the steam fiom the cushionchambcr when desired, as more fully hereinafter specified.

In the drawings, Figure l represents a vertical sectional view ot'my improved valve; an d Fig. 2, a sectional view, showing the means t'or relieving the cushion ot' surplus steam.

The letter A indicates a cylindrical shell, in which the valve B is adapted to slide. The said shell is provided with bores C and D ot' different diameter. In the smaller bore, D, is located the body or main portion ot the valve B. The said body is cylindrical, and is pro vided with annularl grooves F, which are tilled with suitable packing. The upper end of the valve-body is screw-threaded externally, and has tilted to it a female screw-threaded annulus,G, which is provided with annular grooves H on its periphery filled with packing. The said annulus tits and slides within the larger bore ofthe shell A, and may be adjusted vertically upon the body ot' the valve by turning` it in proper direction.

The lower end ofthe valve is provided with a flange, I, which may bc varied in diameter according to the force with which it is intended to be held to its seat.

The shell A is provided with a flange, K, which .sets on top ot' the valve-chest in such manner that the shell and valve will extend into the valve-chamber.

The letter L indicates the cap which closes the shell A, and is secured thereto by means of the screws M. The said cap is provided with an inwardly-extending central boss, N, which is chambered, as indicated by the letter P. Through the center of said boss the valvestem R passes, a space, Q, being formed around the stem to form a water packing. The lower end ofthe valve-stem is provided with a rounded head, R, which is seated in a recess, S, in the hub T of the valve, and confined therein by means ot' a plug, U.

These features of my valve are made the object ot special attention in another application t'or patent on iml'novements in puppet-valves tiled April S, 1881, where they will be found more fully described and claimed.

In the construction shown in Fig. 2, a passage, V, is provided in the wall of the shell, from which extends a pipe, X, provided with a cock, Y, by means ot' which the steam may be permitted to escape from the cushion-space when desired The body ot' the valve, the annulus, and the valve-seat are so located relatively that the annulus will always and under all circumstances leave the proper cushionspace, into which the steam nds its way by the unavoidable leakage around the packings.

Having thus described my invention, what I claim is- 1. In combination with the shell having bores ot' different diameters, the valve and its screwthreaded annulus, whereby a steam-cushion is formed for the valve, substantially as and for the purposes specified.

2. In combination with the shell, the valve, and its annulus, the pipe provided with suitable valve and theescape-passageleading from the steam-cushion, substantially as and for the purpose specified.

In testimony wherecf I aiiix my signature, in presence ot' two witnesses, this 9th day ot' April, 1881.

H. F. FRISBIE.

Vitnesses:

J. J. MCGARTHY, H. AUBREY ToULMiN. 

